videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including Do Re Mi, from The Sound of Music | Flash Mob Version, It's Beginning to Look Like Christmas | Wersi Scala, Deck the Hall with Ding Dongs (Merrily) | Wersi Scala